Sections 100 and 101 apply for determining the chargeable gains or allowable losses that, for the purposes of Chapter 3, are to be regarded as referable to a company's basic life assurance and general annuity business whenever it disposes of assets held for the purposes of its long-term business (including cases where, as a result of Chapter 8 or any other provision of the Corporation Tax Acts, it is deemed to make a disposal).

Expressions that are used in sections 100 and 101 and in TCGA 1992 have the same meaning in those sections as they have for the purposes of that Act.